World number one tennis player Novak Djokovic says male tennis players deserve more money because the spectators love them more, and Indian Wells tournament ex-CEO Raymond Moore astutely observed the women's tour rides “on the coat-tails of the men".

Reaction: Raymond Moore and THOSE comments

Get down on your knees lady players! Raymond Moore, CEO of India Wells and man of a certain age who should know better, said some dumb and ignorant things about women's tennis. The internet, understandably, reacted.

But the U.S. women's national soccer team has not listened to such logic and have filed a wage-discrimination lawsuit against the U.S. Soccer Federation.

World Champions USWNT have had enough of sexism

For the USWNT it's simple; equal play, equal pay.

So let's take a look at the reasons why professional female athletes don’t deserve equal pay.

1. Women can't compete on the world stage

The Aussie Sevens women's team swept the World Series tournament, making them hot favourites for gold at Rio 2016.